These are two of the Nolly boats, belonging to the Nolly Barge Project.The white one is called the Nolly Wanderer and is a day trip boat which can accomodate up to 24 passengers or 16 plus 4 wheelchair users. The blue one is the Nolly Explorer and is a holiday boat for hire on the canal.
The word Nolly is the slang word for the Forth and Clyde canal as it runs into Glasgow.